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Full text of "The manufacture and properties of iron and steel"

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594
THE IRON INDUSTRY.
iron rests on these deposits at Dannemora, Nbrherg and Persberg. Charcoal contains no sulphur, and if the ore,, after roasting, con-
ITORWAY AffD SWEDEN
SCALE OF MILES
ATLANTIC
FIG. XXIX-A.
tains none the pig-iron can contain none, even though the blast furnace be working cold.   This is a proposition rather startling,